mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

of: address: always use dma_default_coherent for default coherency 

As for now all arches have dma_default_coherent reflecting default
DMA coherency for of devices, so there is no need to have a standalone
config option.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Jiaxun Yang 2023-04-01 10:15:31 +01:00 committed by Christoph Hellwig
parent 1d3f56b295
commit c00a60d6f4
4 changed files with 3 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/Kconfig
View File

@ -113,6 +113,7 @@ config PPC
#
select ARCH_32BIT_OFF_T if PPC32
select ARCH_DISABLE_KASAN_INLINE if PPC_RADIX_MMU
select ARCH_DMA_DEFAULT_COHERENT if !NOT_COHERENT_CACHE
select ARCH_ENABLE_MEMORY_HOTPLUG
select ARCH_ENABLE_MEMORY_HOTREMOVE
select ARCH_HAS_COPY_MC if PPC64
@ -272,7 +273,6 @@ config PPC
select NEED_PER_CPU_PAGE_FIRST_CHUNK if PPC64
select NEED_SG_DMA_LENGTH
select OF
select OF_DMA_DEFAULT_COHERENT if !NOT_COHERENT_CACHE
select OF_EARLY_FLATTREE
select OLD_SIGACTION if PPC32
select OLD_SIGSUSPEND

2
arch/riscv/Kconfig
View File

@ -12,6 +12,7 @@ config 32BIT
config RISCV
def_bool y
select ARCH_DMA_DEFAULT_COHERENT
select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
@ -121,7 +122,6 @@ config RISCV
select MODULES_USE_ELF_RELA if MODULES
select MODULE_SECTIONS if MODULES
select OF
select OF_DMA_DEFAULT_COHERENT
select OF_EARLY_FLATTREE
select OF_IRQ
select PCI_DOMAINS_GENERIC if PCI

4
drivers/of/Kconfig
View File

@ -102,8 +102,4 @@ config OF_OVERLAY
config OF_NUMA
bool
config OF_DMA_DEFAULT_COHERENT
# arches should select this if DMA is coherent by default for OF devices
bool
endif # OF

2
drivers/of/address.c
View File

@ -1103,7 +1103,7 @@ phys_addr_t __init of_dma_get_max_cpu_address(struct device_node *np)
bool of_dma_is_coherent(struct device_node *np)
{
struct device_node *node;
bool is_coherent = IS_ENABLED(CONFIG_OF_DMA_DEFAULT_COHERENT);
bool is_coherent = dma_default_coherent;
node = of_node_get(np);